diff --git a/tools/aconfig/overrideflags/overrideflags.py b/tools/aconfig/overrideflags/overrideflags.py
new file mode 100644
index 0000000..480af08
--- /dev/null
+++ b/tools/aconfig/overrideflags/overrideflags.py
@@ -0,0 +1,111 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2023 The Android Open Source Project
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+"""Create Aconfig value building rules.
+
+This script will help to create Aconfig flag value building rules. It will
+parse necessary information in the value file to create the building rules, but
+it will not validate the value file. The validation will defer to the building
+system.
+"""
+
+import argparse
+import pathlib
+import re
+import sys
+
+
+_VALUE_LIST_TEMPLATE: str = """
+VALUE_LIST_LIST = [{}]
+"""
+
+_ACONFIG_VALUES_TEMPLATE: str = """
+aconfig_values {{
+    name: "aconfig-local-{}",
+    package: "{}",
+    srcs: [
+        "{}",
+    ]
+}}
+"""
+
+_PACKAGE_REGEX = re.compile(r"^package\:\s*\"([\w\d\.]+)\"")
+_ANDROID_BP_FILE_NAME = r"Android.bp"
+
+
+def _parse_packages(file: pathlib.Path) -> set[str]:
+  packages = set()
+  with open(file) as f:
+    for line in f:
+      line = line.strip()
+      package_match = _PACKAGE_REGEX.match(line)
+      if package_match is None:
+        continue
+      package_name = package_match.group(1)
+      packages.add(package_name)
+
+  return packages
+
+
+def _create_android_bp(packages: set[str], file_name: str) -> str:
+  android_bp = ""
+  value_list = ",\n    ".join(map(lambda n: "aconfig-local-" + n, packages))
+  if value_list:
+    value_list = "\n    " + value_list + "\n"
+  android_bp += _VALUE_LIST_TEMPLATE.format(value_list) + "\n"
+
+  for package in packages:
+    android_bp += _ACONFIG_VALUES_TEMPLATE.format(package, package, file_name)
+    android_bp += "\n"
+
+  return android_bp
+
+
+def _write_android_bp(new_android_bp: str, out: pathlib.Path) -> None:
+  if not out.is_dir():
+    out.mkdir(parents=True, exist_ok=True)
+
+  output = out.joinpath(_ANDROID_BP_FILE_NAME)
+  with open(output, "w+") as f:
+    f.write(new_android_bp)
+
+
+def main(args):
+  """Program entry point."""
+  args_parser = argparse.ArgumentParser()
+  args_parser.add_argument(
+      "--overrides",
+      required=True,
+      help="The path to override file.",
+  )
+  args_parser.add_argument(
+      "--out",
+      required=True,
+      help="The path to output directory.",
+  )
+
+  args = args_parser.parse_args(args)
+  file = pathlib.Path(args.overrides)
+  out = pathlib.Path(args.out)
+  if not file.is_file():
+    raise FileNotFoundError(f"File '{file}' is not found")
+
+  packages = _parse_packages(file)
+  new_android_bp = _create_android_bp(packages, file.name)
+  _write_android_bp(new_android_bp, out)
+
+
+if __name__ == "__main__":
+  main(sys.argv[1:])